Why switch? Pick one and stick with it is best plan in my opinion. But that said, I do bonsai and when you transplant you remove most of the soil and 1/3 of the roots and foliage. You put them in new soil and ive never had one die from transplanting. ( ive killed many other ways). I agree with Flockshot, if there is no damage to the roots they will be fine. On the bonsai note, I read an interesting piece a long time ago. An interview with a bonsai master from Japan. They asked how he had gotten so good. His answer was " Ahh....I killed many bonsai ". We should try to be more humble in our approach to growing weed. I get tired of hearing "its just a weed, its easy to grow" . Everything is easy once you know how. Ok......Im ranting.